Atm withdrawals

If someone in the u.s. had either an anonymous, no kyc, or nameless visa/mastercard crypto debit card and were going to different atms like from banks/financial institutions where they dont have a checking account and withdrawing cash from outside the u.s. which wasnt disclosed to the u.s. government for taxation purposes, how could they sooner or later get caught by law enforcement doing this kind of activity...?

Prepaid card is good choice though what you think ?